High Frequency PCB Manufacturing – PTFE + FR4 RF PCB with Blind Via

What Is a High Frequency PCB (PTFE + FR4)?

A High Frequency PCB, also known as an RF PCB, is a specialized printed circuit board designed for high-speed and high-frequency signal transmission. This PTFE + FR4 mixed-material PCB combines the excellent electrical performance of PTFE (Polytetrafluoroethylene) with the mechanical stability and cost efficiency of FR4.

This 4-layer high frequency PCB structure is widely used in RF and microwave applications where low dielectric loss, stable impedance, and reliable multilayer interconnection are critical. By integrating mixed materials and blind via technology, this design achieves both electrical performance and manufacturing flexibility.

Key Features & Advantages

• Low Dielectric Constant & Low Loss
  PTFE materials ensure minimal signal attenuation, ideal for RF PCB and high-frequency applications.

• Mixed Material Structure (PTFE + FR4)
  Optimizes performance and cost by applying PTFE only where high-frequency signals are required.

• Blind Via Technology
  Improves signal integrity, reduces parasitic effects, and supports high-density routing.

• Immersion Gold Surface Finish (ENIG)
  Provides excellent solderability, flatness, and long-term reliability during PCB assembly.

• Stable Multilayer Design
  The 4-layer structure supports controlled impedance and complex RF circuit layouts.

These advantages make this High Frequency PCB suitable for advanced RF systems requiring stable and repeatable performance.

Technical Challenges in High Frequency PCB Manufacturing

Manufacturing PTFE + FR4 high frequency printed circuit boards presents unique challenges:

• Precise control of dielectric thickness and impedance

• Reliable bonding between PTFE and FR4 materials

• Accurate drilling and registration for blind vias

• Strict process control during lamination and surface treatment

With extensive experience in High Frequency PCB manufacturing, professional process management is essential to ensure electrical consistency and mechanical reliability.

Typical Applications

This RF PCB solution is commonly used in:

• RF communication equipment

• Antennas and microwave modules

• Wireless networking devices

• Automotive radar systems

• Industrial RF control systems

Typical Technical Parameters (Reference Only)

Note: The following specifications are for reference only. Actual parameters can be fully customized based on specific design requirements.

One-Stop Service for PCB & PCBA

Ring PCB provides a complete One-Stop Service for PCB and PCBA service, covering:

• High Frequency PCB Manufacturing

• RF PCB Fabrication

• PCB Assembly (SMT & THT)

• ODM & OEM Customization

• EMS Electronic Manufacturing Services

• Component sourcing, testing, and full-turnkey PCBA solutions

At Ring PCB, we don’t just manufacture products—we deliver innovation. With all kinds of PCB Boards, combined with our PCB, PCB Assembly, and turn-key services, we empower your projects to thrive. Whether you need prototyping or mass production, our expert team ensures top-quality results and help you to save money and time.

17 Years of Excellence | Self-Owned Factory | End-to-End Technical Support
Core Advantage 1: Advanced Engineering for Precision PCB Manufacturing
• High-Density Stack-Up: 2-48 layer boards with blind/buried vias, 3/3mil trace/spacing, ±7% impedance control, ideal for 5G, industrial control, medical devices, and automotive electronics.
• Smart Manufacturing: Self-owned facility equipped with LDI laser exposure, vacuum lamination, and flying probe testers, adhering to IPC-6012 Class 3 standards.

Core Advantage 2: Integrated PCBA Services | One-Stop Turnkey Solutions
✓ Full Assembly Support: PCB fabrication + component sourcing + SMT assembly + functional testing.
✓ DFM/DFA Optimization: Expert engineering team reduces design risks and BOM costs.
✓ Rigorous Quality Control: X-ray inspection, AOI testing, and 100% functional validation for zero-defect delivery.

Core Advantage 3: Self-Owned Factory with Full Supply Chain Control
✓ Vertical Integration: Raw material procurement, production, and testing fully managed in-house.
✓ Triple Quality Assurance : AOI + impedance testing + thermal cycling, defect rate <0.2% (industry average: <1%).
✓ Global Certifications: ISO9001, IATF16949 and RoHS compliance.

Ring PCB not only offers professional PCB manufacturing, but also offer PCBA service, including component sourcing and SMT service with Samsung functional machine.

One of our core strengths lies in our 8-stage lead-free reflow soldering and lead-free wave soldering capabilities at our Shenzhen factory. These advanced soldering processes ensure high-quality assembly while adhering to global environmental standards, such as ISO9001, IATF16949 ,RoHS compliance.

Questions & Answers

Q: How can we ensure our information should not let third party to see our design?
Ring PCB: We are willing to sign NDA effect by customer side local law and promising to keep customers data in high confidential level.
Q: What does XHT need for a customized PCB order?
Ring PCB : When you place a PCB order, the customers need to provide Gerber or pcb file.  If you do not have the file in the correct format, you can send all the details related to the products.
Q: What is your inspection policy?  How do you control the quality?
Ring PCB: In order to ensure the quality of PCB products, flying probe inspection is usually used;  electrical fixtures, automatic optical inspection (AOI), BGA parts x-ray inspection, first article inspection ( FAI) etc.Ensure that every PCBA product undergoes 100% quality inspection and is affixed with a QR code for product identification.
Q: Can we inspect quality during production?
Ring PCB: Yes, we are open and transparent on each production process with nothing to hide.  We welcome customer inspect our production process and check in house.

Please note:

All products in our store are processing customized services, please be sure to contact our professional customer service before placing an order to confirm the product specification in details.All photos on this site are real from our own factory.

Ring PCB Technology Co.,Limited is a professional PCB manufacturer with 17 years of history in China.

Our products are updated and upgraded every year and we specialize in all kinds of PCB manufacturing and PCBA customization services, If you are interested in our pcb circuit board products, please tell us your requirements, we will help you to provide professional solutions, please contact us on line or E-mail to us info@ringpcb.com, and we will provide you with one-on-one service from our professional sales team.

Thank you for your time.